Keith Letourneau appears in a No. 5 Joe Flacco jersey weeping, leaping, pounding his fists on the floor, flinging himself on a couch, grabbing the TV screen with both hands, looking for all the world as if he's about to explode. He's screaming at the top of his lungs, at a pitch that woul

Keith Letourneau appears in a No. 5 Joe Flacco jersey weeping, leaping, pounding his fists on the floor, flinging himself on a couch, grabbing the TV screen with both hands, looking for all the world as if he's about to explode. He's screaming at the top of his lungs, at a pitch that woul (YouTube, user Rachel Letourneau)

As the Baltimore Ravens head to the Super Bowl, fans are showing their purple pride through viral videos. We rounded up some Ravens-themed remixes and mash-ups -- as well as a video of a crazed fan (seriously, you've got to see this to believe it). Even the Baltimore Police Department got in on...